@book{1063,
	author = {Gagné, Robert M. and Briggs, Leslie J.},
	title = {Principles of instructional design /},
	publisher = {Harcourt Brace Jovanovich College Publishers,},
	year = {c1992.},
	address = {Fort Worth :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/91027787-b.html}
}